Answer:
The sum of the expression (8 - 4i) + (-2 +7i) is (6 + 3i)
Step-by-step explanation:
In the complex numbers (a + bi) and (c + di), we can add the real parts together and the imaginary parts together, so their sum is
(a + bi) + (c + di) = (a + c) + (b + d)i
Let us use this fact to solve our question
∵ The complex numbers are (8 - 4i) and (-2 + 7i)
∴ Their sum = (8 - 4i) + (-2 + 7i)
∵ The real parts are 8 and -2
∵ 8 + -2 = 8 - 2 = 6
∴ The sum of the real parts is 6
∵ The imaginary parts are -4i and 7i
∵ -4i + 7i = 3i
∴ The sum of the the imaginary parts is 3i
∵ (8 - 4i) + (-2 + 7i) = (8 - 2) + (-4 + 7)i
∴ (8 - 4i) + (-2 + 7i) = 6 + 3i
∴ The sum of the expression (8 - 4i) + (-2 +7i) is (6 + 3i)
Answer:
going into the final exam which will count as two tests amelia has test scores of 79, 86, 74, 63, and 94. What score does amelia need on the final in order to have an average score of 80
she needs a 60
Hello!
To calculate how much the birdseed would cost per pound, we must divide the cost of 7 pounds ($15.89) by the number of pounds (7):
15.89 ÷ 7 = 2.27
Therefore, each pound of the birdseed costs $2.27.
Answer:
No, the books had more sales by 5/6 being bigger (Greater Than) than 3/4.
